波浪动力船水翼的推进性能分析

Propulsion performance analysis of hydrofoil on a wave-powered boat

    摘要
  • 摘要:
      目的  为研究水翼的水动力性能对波浪动力船推进性能的影响，对波浪动力船做垂荡及纵摇运动时引起的水翼绕船体中心转动，以及绕其自身转动中心的被动转动进行模拟。
      方法  将波浪动力船的多体动力学方程编写到流体分析软件中进行计算分析。通过软件获取推进力及转矩来求解多体动力学方程，分析静水下波浪动力船在不同波浪振幅与周期、不同扭簧恢复刚度下的推力大小。
      结果  结果表明：随着振幅的增加，前、后水翼上的推力均逐渐增大；随着周期的减小，水翼上的推力逐渐增大；随着扭簧恢复刚度的增大，水翼上的推力先增大后减小；随着前水翼尾迹的变化，后水翼推力逐渐小于前水翼上的推力。
      结论  研究成果可为波浪动力船的研究设计提供参考。

     

    Abstract:
      Objectives  This study is focused on the influence of the hydrodynamic performance of hydrofoils on the propulsion of wave-powered boats. The hydrofoil rotation around the center of the wave-powered boat and the passive rotation around the center of the hydrofoil itself are simulated when a wave-powered boat is heaving and pitching.
      Methods  The multi-hull dynamic equation of the wave-powered boat is written into fluid analysis software for analysis. Propulsion and torque are obtained by software to solve the multi-hull dynamic equation. The thrust magnitude of the wave-powered boat under different wave amplitudes and periods, and different restoring stiffness of the torsion spring, is simulated and analyzed.
      Results  The results show that with the increase of wave amplitude, the thrust on the hydrofoil gradually increases, and with the decrease of period, the thrust on the hydrofoil gradually increases; at the same time, with the increase of the restoring stiffness of the torsion spring, the thrust on the hydrofoil first increases and then decreases, and with the change in the wake of the front hydrofoil, the thrust of the rear hydrofoil gradually becomes smaller than that of the front hydrofoil.
      Conclusions  The results of this study can provide references for the research and design of wave-powered boats.

     

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